* default.exp: Use the interface variable $TMPDIR to allow the

	* default.exp: Use the interface variable $TMPDIR to allow the
	specification of an alternative temporary directory.  Wrap a loop
	around various testings and settings of interface variables that
	specify the locations of programs to be tested, e.g. $KADMIND.
	Add some support for having different sets of enctypes on client,
	server, and kdc.  The envstack changes and multiple config file
	support should get cleaned up somewhat later to possibly allow for
	programs to execute on different hosts.
	(check_k5login): Fix up to reflect actual (perhaps bogus) behavior
	of krb5_kuserok(), which doesn't do quite what we expect, so there
	really does need to be something like "luser@KRBTEST.COM" in the
	.k5login file.
	(check_klogin): New procedure; .klogin also needs to be checked
	for the v4gssftp test.
	(envstack_push, envstack_pop): New procedure; keep a stack of
	environment variable state, which is useful for running different
	programs with different config files.
	(setup_runtime_flags, setup_kerberos_env): Rewrite somewhat so
	they play nice with the envstack.
	(setup_krb5_conf): New procedure; write a config file with the
	contents parameterized based on the type of program that will use
	it.
	(setup_kerberos_files): Create different krb5.conf files for
	client, server, and kdc.
	(setup_kadmind_srvtab, setup_kerberos_db, start_kerberos_daemons):
	Rewrite to play nice with envstack.
	(setup_root_shell_noremote): New procedure from raeburn; handle
	the case where we're already running as root.
	(setup_root_shell): Call setup_root_shell_noremote as appropriate.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@13500 dc483132-0cff-0310-8789-dd5450dbe970